BASIC ELECTRICITY STUDY COURSE for Home Appliances HOW TO READ: • WIRING DIAGRAM SYMBOLS • TERMINAL CODES • WIRING DIAGRAMS CABINET GROUND BK W STARTER BALLAST S 1 FLUORESCENT LAMP Module 2 LIT 787740 Rev. C For More Appliance Troubleshooting, Repair Help, & DIY Videos Visit ApplianceAssistant.com Note: This Page was not included by Whirlpool Corporation ApplianceAssistant.com is not affiliated Whirlpool Corporation Whirlpool Corporation in no way endorses ApplianceAssistant.com WHIRLPOOL CORPORATION does not assume any responsibility or any liability in connection with the use of this manual. © 1989, 1993, 2000 WHIRLPOOL CORPORATION All rights reserved. No portion of this book may be reproduced in any form without written permission from WHIRLPOOL CORPORATION. ® The trademarks WHIRLPOOL , , , and FSP are registered trademarks of Whirlpool Corporation. INTRODUCTION The material presented in this module is intended to provide you with an understanding of the fundamentals of electricity as applied to major appliances. Major appliances have become more sophisticated, taking them out of the screwdriver and pliers category. Their electrical circuits include several different types of automatic controls, switches, heaters, valves, etc.. Semiconductors, solid-state controls, and other components usually associated with radio and television electronic circuits, are being engineered into automatic washers, dryers, dishwashers, and refrigerators. The appliance technician is emerging into a professional status of his own. He must prepare himself now to be able to perform his duties today as well as to retain his professionalism in the future. No longer is on-the-job training sufficient to prepare technicians for the complicated procedures required for todays sophisticated appliances. This training can best be obtained through organized classroom study and application. However, much of the knowledge necessary to service todays appliances can be obtained through study courses. Completion of this and other courses will provide you with sufficient understanding of appliances and their operation to enable you to do minor service. It will also serve as a valuable stepping stone to more advanced study and on-the-job training to improve your servicing skills. Information contained in this module is used on WHIRLPOOL® appliances. 1 TABLE of CONTENTS PAGE CHAPTER 1 ..............................................................................................3 Wiring Diagram Symbols CHAPTER 2 ..............................................................................................6 Terminal Codes CHAPTER 3 ..............................................................................................7 Wiring Diagrams *TEST ............................................................See Test Book LIT787743 *NOTE: We recommend taking the TEST for MODULE 2, right after studying it. 2 CHAPTER 1 WIRING DIAGRAM SYMBOLS These wiring diagram symbols are commonly used in most wiring diagrams. Study each symbol so you can identify them by sight. MANUAL AND MECHANICAL THERMOSTAT SWITCHES NORMALLY CLOSED (SPST) (Single-Pole, Single-Throw) OPERATES ON TEMPERATURE RISE NORMALLY OPEN OPERATES ON TEMPERATURE FALL TRANSFER (SPDT) (Single-Pole, Double-Throw) N.C. MULTI-POSITION (Normally Closed) NUMBER OF TERMINALS N.O. (Normally Open) AUTOMATIC SWITCH N.O. (Normally Open) DOUBLE THROW N.C. (Normally Closed) ADJUSTABLE INTEGRAL SWITCH (Timer, Clock, Etc.) RELAY (Show Device Used) PUSHBUTTON SWITCH (Momentary or Spring Return) N.O. (CIRCUIT CLOSING) (Normally Open) COIL-OPERATED N.C. (CIRCUIT OPENING) (Normally Closed) TWO CIRCUIT SPDT HEAT-OPERATED (Single-Pole, Double-Throw) MERCURY SWITCH SPST (Single-Pole, Single-Throw) SPDT (Single-Pole, Double-Throw) DOUBLE-POLE 3 WIRING DIAGRAM SYMBOLS TEMPERATURE ACTUATED MOTORS CLOSES ON TIMER OR CLOCK TM TEMPERATURE RISE SINGLE-SPEED OPENS ON TEMPERATURE RISE TWO-SPEED MASTER OR CONTROL SWITCH OFF HI THREE-SPEED (Number of Positions and Internal Contact MED Operation as Required) LO R L1 235 6 1 Typical Example COMPRESSOR C S LAMPS MISCELLANEOUS INCANDESCENT ADJUSTABLE COMPONENT (Arrow Drawn thru Component at Approx. 45˚) GERMICIDAL OPERATING COIL (Solenoid Relay) BALLAST BALLAST FLUORESCENT STARTER NEON RESISTOR or HEATER CIRCUIT PROTECTORS CAPACITOR CIRCUIT BREAKER CAPACITOR (Non-Polarized) CIRCUIT BREAKER W/THERMAL O.L. HEATER FUSE TRANSFORMER THERMAL FUSE 4 WIRING DIAGRAM SYMBOLS BUZZERS LINES AND CONNECTIONS INTERNAL CONDUCTOR EXTERNAL or HARNESS WIRE ADJUSTABLE OPTIONAL or ALTERNATE CIRCUIT BELL ○○○○○○○○○○ CROSSOVER SENSOR JUNCTION (Moisture) PERMANENT CONNECTION THERMOCOUPLE TERMINAL SHIELD CENTRIFUGAL SWITCH GROUND (EARTH) GROUND (CHASSIS) PRESSURE SWITCH S.P.D.T. GROUNDED SERVICE CORD (3-Prong Plug) HUMIDISTAT SERVICE CORD (2-Prong Plug) MECHANICAL CONNECTION MAGNETRON SEPARABLE CONNECTION LIMIT SWITCH N.O. THERMISTOR (Normally Open) N.C. (Normally Closed) 5 CHAPTER 2 TERMINAL CODES Terminal codes are found on all wiring diagrams. To help you identify the color codes, see the list below. Terminal Color Codes Harness Wire Color BK ................................................................................................................Black BK-Y ........................................................................... Black with Yellow Tracer BR .............................................................................................................. Brown BR-O or BR-OR ....................................................... Brown with Orange Tracer BR-R .............................................................................. Brown with Red Tracer BR-W ......................................................................... Brown with White Tracer BL or BU ...................................................................................................... Blue BL-BK or BU-BK .......................................................... Blue with Black Tracer BL or BU-G or BL or BU-GN .......................................Blue with Green Tracer BL or BU-O or BL or BU-OR .................................... Blue with Orange Tracer BL-Y or BU-Y ...............................................................Blue with Yellow Tracer G or GN ...................................................................................................... Green G-BK or GN-BK .......................................................... Green with Black Tracer G-Y or GN-Y .............................................................. Green with Yellow Tracer GY ................................................................................................................. Gray GY-P or GY-PK .............................................................. Gray with Pink Tracer LBU .................................................................................................... Light Blue O or OR ..................................................................................................... Orange O-BK or OR-BK ........................................................ Orange with Black Tracer P or PK ......................................................................................................... Pink P or PR ...................................................................................................... Purple P-BK or PR-BK .......................................................... Purple with Black Tracer R ......................................................................................................................Red R-BK ................................................................................Red with Black Tracer R-W ................................................................................. Red with White Tracer T or TN .......................................................................................................... Tan T-R or TN-R ...................................................................... Tan with Red Tracer V .................................................................................................................. Violet W ................................................................................................................. White W-BK ........................................................................... White with Black Tracer W-BL or W-BU .............................................................. White with Blue Tracer W-G or W-GN ............................................................. White with Green Tracer W-O or W-OR ........................................................... White with Orange Tracer W-R ................................................................................. White with Red Tracer W-V ..............................................................................White with Violet Tracer W-Y ............................................................................ White with Yellow Tracer Y ................................................................................................................. Yellow Y-BK ........................................................................... Yellow with Black Tracer Y-G or Y-GN .............................................................. Yellow with Green Tracer Y-R ................................................................................. Yellow with Red Tracer 6 CHAPTER 3 WIRING DIAGRAMS Appliance circuits can be complex. In order to construct a diagram of these circuits, the different components and switches must